{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984593706",
    "entityType": "User",
    "nonce": "0x0137f459d95b88202fd866b3d31923a12b4a4f980aaf0dd777cfe84eaa1e7642",
    "signature": "0xd192f35e8ab13d720db0557da03b186a0faa11683db68ae5eae37a4df2881b912bfc1bcf0e66947f5e0b83f8f29416efd2ad59d38d9c4f785bba506b3035ea051c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}