{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x8b667a23b2792010d3c9122f102ce21546024609552ad78da2b12321d4c73fb7",
    "signature": "0xd40e25a32e37da0523a96ffb9ff84566839067e61d933899ee87acd48c55f6777650ccabb56e495318040c785b791886bd9c9e4fc45d74fe2181f1c3f2c220b71b",
    "signer": "0x5dd05553455121E26035854a1bD36b7D512E2F90",
    "userId": "306970"
  }
}