{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44f815e3941f95d29268ec86ef4bebbc4a7018b6bfa3bed984f41df57971a459",
    "signature": "0xf2b7b82c4498095abe268d2d2e034d9cc1ed1586d7c50410c2728da655ce25d82c03ea493f210b50e29a512668e96ded96946682600b26b518304aaaeeb7cde61c",
    "signer": "0x3e16afFf69eC32202c1B755Ad919C7aA325B7aBE",
    "userId": "902811065"
  }
}