{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1895432",
    "entityType": "User",
    "nonce": "0x5e13cd3860bf67fd7ff283e3fef8c2b76d601f27c848ac64db799335deadd9cf",
    "signature": "0x15e850761ebcc01384ea4f0471a01ee61cf4e6ed6e33a2a0d75b98aedd64bcd2567cf193da164aaad519de4c196d857add9c1209553b9ae34fe47131dee97f601c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}