{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "546603040",
    "entityType": "User",
    "nonce": "0x0352cf0aa8398de2653477f042c704762608990d88658594893ccfcca3442eef",
    "signature": "0x0f9ddac7cf124adea53a8f9dd98359c00814a0b3952c242cc588365886c6a42761fef7bfeca427688308306e29718602dcc7032bcd85d1539d37acd34727d9b11c",
    "signer": "0xC8D8D2740d15d06054dd962172A6dE57b86987BA",
    "userId": "928026347"
  }
}