{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xe116977c7b7b03688eed7c64d3db0ab068ad3fb6b6d7528e5db68d2b43083762",
    "signature": "0x19994fdfa994952e842e114e3753390e756ffb7c96e24c5a3b0cd27e9f6284b65cae33821c8ed648623daf129c009f80213561199a5722787e5e6b471f44c2c61b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}