{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3b19ec27224c213f9efab0ff3fe851574a92349d87650ea66f4d3fc7825882d0",
    "signature": "0x5bde68d29a88216b1b2e5c6267546b6a9799aaa5fd6f0452c198ff6bfd975d9c6057bbc615942377aac01b0e58db0e9f70f06f78efe5b84da05c32ad0df28d001c",
    "signer": "0x5d071b0B6A8FF70A5357c9FF69F7f301D7BB3205",
    "userId": "50194601"
  }
}