{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x357b8bc6afa708a318ac9c9e6a214c382505a6d6200062fdd3f9b41d7095b46e",
    "signature": "0xe94715bb911328000423a707db8db011e7993a827b48a696b5f0a1cba26c1afb28affdd028cc6f2cd707effe405c71741e6fa080f9b2ca49e049b5468d64dee61b",
    "signer": "0xe77528058B27FBC04D69b1DFdE28347c6ef15a38",
    "userId": "43887320"
  }
}