{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661101608",
    "entityType": "User",
    "nonce": "0x348eda0810eb461a33effa868e034017f74167d2cff5edddf07eb136b62f04c2",
    "signature": "0x2c999f302dd64fab9fc3c16d439325e69ec1b7bf848648454189534fd4412d21059b96fd2a14591bf2d596f0ecde798a33a2cde73fbdc0b0421fed865cc5f5ad1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}