{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "501441",
    "entityType": "User",
    "nonce": "0xfc581bacae20ae5e847f8ac89a2c439dbb65ba48a24e35671e4c3f9be94cf19f",
    "signature": "0xc29c85fd5b438b10a20d29ab344978882527345ff93e32d87da07f0c0f6a61a20ecd51fa033e97010f3c1d67a235aa865b3fcd5f9d1b8e36a6470493600df64e1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}