{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75cc3b0b33c2958d24984e6127b4f5cd0fe6f69d632975dd42f01d68e9ec86fc",
    "signature": "0xe3fbfb06dfe37e3e0a8e1cf0ef1d2d117fb0925b8df907a5bbb3597b65bb75d402e9153b5e2b992f881eb064fee3b5f44271056e111f039ee4710527c30dba841c",
    "signer": "0x851348457961822AeC660A69380a1445B66F65a5",
    "userId": "702600438"
  }
}