{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674005",
    "entityType": "User",
    "nonce": "0x7e1628a01f01135450042bcdb4e8d4c8c61a6a6d6b9f6709b6d50da0a1ef983d",
    "signature": "0x2128fcbd7499023897ad8931b7a20e4742e23f8f7ae5d801d314693b0d6e7ab73f46521a844a4a29c4abebc1107d981b8f74b279cf0afdd458200da44c76df871c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}