{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x781a1977860b389038293d50d8dbf9f1d72d61c16250be9deb993f5f8930cb78",
    "signature": "0x62c7d9526c29de0d27af19cafcdd2fc1103aec9f4bf63594d1b257fe256c7508233c5b77daca389ab6f41ee929f781e61aed5000b0a1d5395fd47095ab7020051c",
    "signer": "0xA1aB2f0dfbA9832A44278D58A4312773a3297f13",
    "userId": "78245799"
  }
}