{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "738849",
    "entityType": "User",
    "nonce": "0x90326994e45f441b6bcb84f30e151250a930ce5e9123c78d46649a655bdd406e",
    "signature": "0x902ecc7e64f08bc14b0875eaa04ee42f8765bfdfc957cd20abbd24f8740c7cd319125fe4b61b0d7461b6b4345837d9e15818cca03ce642ee01bc83fd2dfe52871b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}