{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0xf78ca5716b5ed5e7433c358ffbf1c1c9ce7c5653d1ab766e9d1dcfd87edd2746",
    "signature": "0x5070ac119de2c56cb795cafd0d5e3ebba2f5812ac3dff77ac49be60060af096a407c4538c1de4ae389e946b46059235764f2ac1664cbc88b9bcc10f1af39f9011c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}