{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342495",
    "entityType": "User",
    "nonce": "0xb3cc1ee74757d208053daf4438880bc370f50dcec80916ba3b4623eb3d575125",
    "signature": "0x4ac92bbb73afee7312f8e019ef68828ada1312056d310be4df8b8733c34122947fa656ced462531ad052aeb8abfb2e2858eb7b0b6e44afc55752c83ae536070d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}