{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xb9c38947ba691e5210f953090c94a989a46fffafb41887b9cadc0ae42dcb182d",
    "signature": "0xcf40fc9dda470425822d18708a654282b0731127ec6a966e83dffab7bfce40154ec640ec4ba56d08c76fe5e879a67b8ecd064e23bdce67ceb4b657a5a0f7763a1b",
    "signer": "0x7C2169544c0568cB3b210f320356B6A77E891F30",
    "userId": "495616082"
  }
}