{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb2d912119592434a1ffa3d8558b157035b0fefc73d78f9d80fe240077d40331",
    "signature": "0xc6cd116a924f5fbd4cb8a0f667fde4ae2a213db43d06f1f6d83bd641ac617d6575f6c901e25dac76d76242ca2ace8ba371343165233b5a08e2a250d17c7b6d381c",
    "signer": "0x31bd8320C5Fc8fc9b8Da8C58B34F32dAB316ABE1",
    "userId": "63271201"
  }
}