{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xf743e9f739f30b439573ee577c5cc12d541838cf2c5c1097d9dfc70af52e9017",
    "signature": "0xa07d83490062920147671052ea58e4a99b5567ce63ffa3eeb0f4d0db1ba053de066bccaffe838f1e54b2624eaf5e6bf0351c7e07100a3a45d96580f39a8fe5431c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}