{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29910aadd84971f568ca57898fad521049cd68a65376d2f1ce3d757852f150d4",
    "signature": "0x144aaa41d00d7e7d3a7113802dd02cb69079a955c12d25595ab58fa1bf9db49e4f7b1909f0e6fc8fa91c4c6d5fdf69fdd1509a95b5e55c65924922a6308bb61f1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}