{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15642",
    "entityType": "User",
    "nonce": "0x2b736cf5f04181037637478400f3f22a5fd5e66807335fc45a2ff91c97cb1ba1",
    "signature": "0x58ac4a64ed08719203116247891bccea989bd34bc7aedb675ceccc90786b1b4b1b5662b740fa1e067b530cc1ea5903c8250ad1bf554201d45a6a7740604478831b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}