{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc1e590ca9a4d9d5c730f52ea9d54f9327203edbd3a069fd29a3abe3d3346deb9",
    "signature": "0x12f38f54bfaef0f4836308bf84c5a0432f81a64e57a2ac7933675901c4c0f04047511a5b9f37d106e05503c694177752c3800828e422076bee0d7e9752bbb3f11b",
    "signer": "0x5916ed4A9f9E17f440272647226A98029dAea9FE",
    "userId": "422386609"
  }
}