{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "376285",
    "entityType": "User",
    "nonce": "0x038ca6639c27bd1d5a5b8466a2c2b446dcfa981a0567689054982b00cd9b9567",
    "signature": "0xc9bad7cc80d9dbe61683e6a19f51601aef48b8271650bb06d8e223a4f6653dfc796a38fac56b3cf66e2ba1f35cfd3888fd96fd43042e095345fcfb0d6bd6778a1b",
    "signer": "0xd72900E031d6C9829fe9C1950eF6FC0D34C60F0F",
    "userId": "396396820"
  }
}