{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c5109d634d1cabe913b917bfb621f115bc85f360ebc3f4c056d0dcf8df844f3",
    "signature": "0xde9d8339805bf5b9aa0e232a50d8d08bb87ea9006d82c4e45eee67926a3e5bd57f66e023a0e80711a32a356695a50a49446f1e68b22c91613c0be3797ac02f291b",
    "signer": "0xe843310494834103Ba1473dE3e5a3233118eC791",
    "userId": "428362958"
  }
}