{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "554379379",
    "entityType": "User",
    "nonce": "0xb76cd3faa14d9c74b45d6e1074aa31dc3f877062deff5fc2106d57513ad9712b",
    "signature": "0x0c4e48d891931ef3ac63129efbf8e04b3ee2c36eeb56040afc520f6b1551c8df4f417de45210e0016984d4857e587b9913a5cbf311bbfcbf66b6a202f139c6291c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}