{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "637451898",
    "entityType": "User",
    "nonce": "0x737628c3e652bf88b04ae877209f50b3558efb8277d8cc7b3051606149a6e94e",
    "signature": "0x8c1197cc32175af286410f07b11c597442eebbc86e6e532a5d9fdf7765c94d6f2aedcbff3e415525ca54a7e588af5a81529889fdaa2da5d8e6fe691dde6a13f21c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}