{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x856e0f2deb598c2b1f26c358396a0f8795be8678cc1eb759c76df6ba38abdf55",
    "signature": "0xb19659d37cedc21d20e55927c125d106ce45cb9a55dd4db09811f18c860fc94218f0d0430f89839c0ebdd59cf42d447c29abbd71c7ae32ee4b2d79bfa08bfda71c",
    "signer": "0x833514eC19843bc774D26d6f85621497F1319250",
    "userId": "275069541"
  }
}