{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x967b82e4aebd0298695e38ac8dba9d35576bfeeb32c25f971f8332c524ac5a77",
    "signature": "0x8d13b5ebff938e3300d54660a7a2033259a3d25e849606ecebc306041de06d24040b9eef5b05c26912145dab9497aefb0c462bba19e3edd99d30e4e94751f25a1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}