{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "553720762",
    "entityType": "User",
    "nonce": "0x6311402952fc9bf5d77d8064d71a5176873cd6ab68b62c5cb5b18bf4423e8812",
    "signature": "0x97e9bcf211579e49dc8bf0e1ace2f7bfa46b4fca50f6feda8c2d79552274663526718a69e15eb24e16b1ec69842e9b3900d0eb8b0b3c0e2bad59d1e9a6d046281b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}