{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89068d9bed5493a54d7ee7e588b1866801a3d1538e3bda1e3ebad50406ae491c",
    "signature": "0xac16439403dc01b12d076e8a3087382ecc05e92e969a03694b790455d3d1ac5633070851fc6bcd7f9b89e4a627a7a138892e294dfbdd552ef585006893a25cf01b",
    "signer": "0x4a2e182EFc2eb1f33854A9f8c72D0BC645c28234",
    "userId": "209092535"
  }
}