{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73591",
    "entityType": "User",
    "nonce": "0xde9a124150d0c17de08fd2f9d334cca6c07c3bc691414a6a311fa06487e5142b",
    "signature": "0x4a545b1320cf8852256f4424ab19f6211591795f4c6861a14562b24ab14307b47a61e060e0d9a4164629ce4413866b4398dee875dd56178b511bebed482c23481b",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}