{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880695",
    "entityType": "User",
    "nonce": "0x95c01f2c21d8494dda08ac7ec5af66b70f9460dc1ce66b643bfff39b2c56398b",
    "signature": "0xdb5d37a37587cf2bd69ae1ac473e750d7f9ca976c14923bf7b556ba365004b1c11f3e67b57aaa0223d2f7aef1f20d90dff4a7fd4f9672b4a83695c57c59b80b11b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}