{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xc09ec00e550913985ef68a53169fe56bddc1de7ae6bfeae8a73baf7f862ab700",
    "signature": "0x0ff5dbc58bef37be93365bfdb591e3924ca710c81225e7e9e7e6bb0e4b82e5071639795cda526076cfcc64f919fcad5d4aadd212e901aedd41ba93d9aed699bf1c",
    "signer": "0x25E3C51f72Fb7d4734725DC533199253F7dc7801",
    "userId": "619339589"
  }
}