{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x84fd55bdd61e6ae95b3a4205967ddda3c9ddd84d8286107f7649e0bc569a7f68",
    "signature": "0x13f6ccb3ae0b3788bae8529127da7a1586b1592b43dedf9f0487d189798d3ecb6ca4dc1b410402d8f1620e856973d7ab84e5a7afecd95f4a5a9408e048b278801c",
    "signer": "0x7597c344f2cA84759691973cED6234c95796DEf5",
    "userId": "548675890"
  }
}