{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c9e60998cbf33c222f49b73f12348793b8ff0f95ade3b42da3a221eee575eba",
    "signature": "0x74c873338dfe5c8b68dc1e1fec0a4ba7d0eedb2caea0970ee74adfc9afad985d2e47e08fecfca1e4812e01215ed3677a09017fea4e0530daa8911262dba1384f1b",
    "signer": "0xC2Ef2575F47bcA66b4516f69627158a24A554CF2",
    "userId": "767459146"
  }
}