{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528688046",
    "entityType": "User",
    "nonce": "0xe6e901c6397106f0d8687ce444e00a162252fd22b45a2ff4b9ff2a9cc7bcdc01",
    "signature": "0x4c89ec5bcaa574a5853072ee523f795c0bdb54af9dec4bed6358042d4acaece34370e20fe9f4dec407c97810c7ab2206c63294818d270bdaaab2edf2bbc197af1b",
    "signer": "0xb0bc7585AC84F169814851A3C22d8d92D133337F",
    "userId": "267657235"
  }
}