{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "725955468",
    "entityType": "User",
    "nonce": "0xe837beb36c9720be9ed7c73af8c45d36c8f252506b1e20ab9c0307ff8908a33f",
    "signature": "0xdd09d10b82b33d0653b7953e7bc0a079b07fc7b0e3d337bc8479a5825ad4cb920b72226433e4ab59bc959367d3cfb9128a7a47a076484a07e3fdf869a112fcf41c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}