{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2012676",
    "entityType": "User",
    "nonce": "0x50abc536320a922e88fa251be81b6e7ca472e126558be14bb376980f95c37d5e",
    "signature": "0x0eb15035b1bf27f4a713950c5ad9e830f0968b219ccd90c12884a7eac88e157d61b72f906d1fa0fb95e78ad31b17219e1ce8629e4854eda137dc4125d04a4bc61c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}