{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xd877242a951cc86c276a837c1275604d6670ac7c9a3d1c78f07e0742fb0f2601",
    "signature": "0xd0b6b9841658530da5454e9be2ec6588b40663e17c95a0d1f0706c24e229d16807d0566253c5fc88b8cad83f2d135585504e513f5d51d6b3857b59331153a9ab1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}