{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394390",
    "entityType": "User",
    "nonce": "0xe67e1099089871f9d8a4030897a14ecceb909d41626e81d0c39afa40296e4f6c",
    "signature": "0xb54de02bcacb2e5d063e7570a3aecedb53f4571676d8468960969f83bb31662f7be618354fe322c0d5d53d7f95ed4071d8667c8090850ce7fd2e9017a59fc8531c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}