{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298181",
    "entityType": "User",
    "nonce": "0x7913d3b8d51a050071c4106c6d16615a334a9a67364329563c8f1ac9faf5d5b4",
    "signature": "0x683ea769a6ffbfd38d8a50af550d3854adbf45a540e1a5e9fb828cdf8c67a0702e1f1b80fdc67546eec42ec6e2ee0a2aa015251f000b8b791aa6b745d8e075dd1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}