{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd75f4c56f5eeb2fcac48b026c66280bb6e4124086800fd442ada9eec1ff8255e",
    "signature": "0xfa2d3d9f21cc7a66814d515b033eb2cf331ad058ecc63f7f0de67661b20695381e9281ae6d0996148251e030949d7bf6e8aa03a84f0767f3044c6a16b0511f0a1c",
    "signer": "0x2d45Ff20F38e74b7Fd736aCa88aEe5E051E7d242",
    "userId": "563507633"
  }
}