{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x7e34cc2b591abde2b0f36b2e8005efe9d7642f05aba4e3dccc72839f66890158",
    "signature": "0x78566ecd280bb6337487b7703b4b93a3f3978a8bbc2c02ad877f0e3faa46cf0a257bb1e92f3f7fa21ec186dde196ea2265e6def3f1ecf61ac2273e156833966b1c",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}