{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61152e0c45aca97c4f50c671a2c7b02418e7baaf4a85f6031e67cb31cbdc5d27",
    "signature": "0x91bd7fbfc5b5bc869891f810350e356887529437c836a268ff91b48fab86d2a5080c3b050c02633e025e65b765f2a89e94268fe66f3f6fdd1a554d22e4f11c451b",
    "signer": "0xb5F851B72783F7778ea81B66bB1B7EaFbbb74bE1",
    "userId": "755908561"
  }
}