{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341366",
    "entityType": "User",
    "nonce": "0x819a89d834d3ded6ac3ca4b3592c461aaabddce1a572963e0bf5a2d05e51b656",
    "signature": "0x791b0bca76c4150a31cb9e198278168e00f2ce41e4ad2db827d8fb5f522cd3592398f81c01bef73470bff18ffa925a1d9b7e6f6f6bad61a3f6b9aef59e0c47b41c",
    "signer": "0x9FCb0f9a5558BB530BDa392b531803998c36B7fb",
    "userId": "108176965"
  }
}