{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "312894",
    "entityType": "User",
    "nonce": "0x0dbe12330e9b618d78e672d36648aea80a3419b9335de9a701d6095cdc5e63e2",
    "signature": "0x78a76984328dbb75bc02ba5af5a67c0906fce9cd49474e0548f0f06a414a76b313f12e5b9a8a39278e7abb00f183011cbad5a035e24fd47d459e6832454e5c581c",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}