{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73f827c31adbebd3e17f266cf6060d11b889086996f3ae822c0f7bd359e7c958",
    "signature": "0xeeb0ae0ad4fed1f9f4a99cddf0aa7e45402aef0ec7938c595bd8a07273c322572b51da1fa5ed6a8cf6d130a65e7cf6710c282ef7d2de92b7a42b507d0c2241aa1c",
    "signer": "0xDf42E5ab5C73f1ae28517b1c3de83C05589562DC",
    "userId": "538487490"
  }
}