{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8a9563064a3b9b2e5c83273abb0434b6c01f02d056649c976af0373984d0628",
    "signature": "0x54da8d5e44cb28d1d4cfd773bc74b89bbc0c79b0dca2e0d3e3928c1494e8faff46d8d00eecf3adcc5c4e79b6411639c85f5e7c53edd3f43775d187edf25ac69f1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}