{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b5d04fd46495090db4441dd80cdce6bddac1b3ce3c17e54ca3e36b4693ccaf8",
    "signature": "0x438b907951f98a04139a336f580cc0e20379b87274ffb15b06f89ebf9903237a79937d6de0b9a888a395d4e5644409535e779f40c0d194a972e155cabb9ee5261c",
    "signer": "0xC0eEcD5Ab99B0f0BCcD79Cf620CA23C758E8a338",
    "userId": "136979704"
  }
}