{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0xdafd5d3fd69bc4f59847f6aba9327ab824f21645d3996c17a78f7548d72843e8",
    "signature": "0x9bf9f976c7dbeb49f0f9f42e458e5b254a1ba70edf0e5bc4c6f6237fbee7352c2e7b4b32bfdf19664b6b24213397d34d8d68d14534353f41b332e74a3e357d251c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}