{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1224",
    "entityType": "User",
    "nonce": "0x1119f8c1410aefad3b7c6c7a2227155d6b98824ce871ee766f7140b413b8378e",
    "signature": "0x162bc75e9d5b589fc31a7f94b51f1b4789530e78828a455336743ecbd0fab58f4a3b93dd1166ddfd07485d6bb0e915060bd50e2022b1696232e4e9247a0478a71c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}