{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x2c52fa535d97abaa29d6f5215db9e3b058ffdf06a310174275f12d9d9a08f9a8",
    "signature": "0x3245d836bb507612a6f02e2ab43e37454910cbfad0f42160945742f824255099570aa10e25be432c337191dc769632164f34aee80bc4027a4df460926049e6331c",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}