{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3fad225fe9523ecb6bd6c5393ebe48c609e7fe07efab287c195cdf544771c686",
    "signature": "0x7778e210f37ce4130fcfa1757a5c9e49cdff22a33bc9b684ec2b6668005b59281c47ab932b2a7bf3d5a32e492cd00a778d9225d989747abcae6154a07dc7ee9c1c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}