{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a447e1dafdaf26f5e1a0e1357c799c14c64fd8bfbebd2cc34b94467b4bd335e",
    "signature": "0xecbc61fb1dc225cfa2f7a1498e1cdbc7f0ef22ae6c71f871e277330634fbc2d20399d9be84c3063a1181342cc8f9cd16033a6c7a409e5ba8426df7c8732989181b",
    "signer": "0x6EB2bD0E0d8Ed336f993b4509F61204D01562a1d",
    "userId": "311009020"
  }
}