{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777",
    "entityType": "User",
    "nonce": "0x9623f6f9615bf95fee0791d625bf6f95c155bd4268324c3b93361be0cfae658a",
    "signature": "0x0ed64282dd1dd9a3e0d1827a9b7637d2e9dd41cf05ffe16b36d3a21a3c3ebc4a696ee2f97ac8ce5e137e84b9ce8376b737b05745ed65a374b06d3d277896c6801c",
    "signer": "0x0b4d6908a78f82e38BF9124A5dDE92F365162Bb3",
    "userId": "529492906"
  }
}