{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13944",
    "entityType": "User",
    "nonce": "0x77bb78235e1b83e35b2f60e95cdd83f4b723c94607c3c281ddefd393c85e776e",
    "signature": "0xde71a76f0726972fb39147aeb6f97a9d1df6b274ee80151ecc23c5a0b27d053307e7fa87fdc61dcfecf5dd0a377c23a91d397f9b3b2e9fbd53715cfe574bd6031c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}