{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0xa93adc91dc73ad2c0848359c77cd8c37481066b2670ee8886d8dc0f3a34268f9",
    "signature": "0x227163a8e29bc657501d6b0d998cf92d1a31f3e341a7c1342c38498b3f2bbaaa5dfce99246c39cb4f62ef62a265ed170e034535ac1e0525a5253024cc32a56f61c",
    "signer": "0x4993C3631eecd6e8c1635351A99C2103C7d6Be4b",
    "userId": "906184213"
  }
}