{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "972435607",
    "entityType": "User",
    "nonce": "0xa93b16bc2e6522aa566c95b9a65e6b0164b7e5ea70f4d74afea79ef8b2d72ca5",
    "signature": "0x5fa6907c243f43aa2bd94126e81b704e82a05104dce68bd8e4771c0031a4320f6fb57fecbbc5a1108b0f5f8dd417377803bafa5b49f2f52cc62030d1c42ee2021b",
    "signer": "0x4affB179527ee604CBCCb000A6fB3E5563330F2e",
    "userId": "265097712"
  }
}