{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "548504312",
    "entityType": "User",
    "nonce": "0x5e5b1973d83bc37e0e26a921bade7d89af3d87d653853c691caf0e517aaffc31",
    "signature": "0xc2bb8f2beb9bcbef48542e6ce36eda43357b0c35daaefeb285f5e3591cd415267eee18a8b1293b25aedf7f4e235ffae970e3c48f3e80d80a488e9bdaff85c1a81b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}