{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258202002",
    "entityType": "User",
    "nonce": "0x57579065bb893ca7beddacb04f1f3962a726ef6d059a2d615397bb54f472ec98",
    "signature": "0x78774305833d5baa64af136263291cd0b4ef6251e305cdf514deaa3c0f7346ad2ac9d7c179e89f40c7fa655acf6556d92acad81910aedf5e5a12497af16e3ff81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}