{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203752",
    "entityType": "User",
    "nonce": "0x4164beda3fe730e19f89fecf9f5ddbc63492c7c257264912672736165ce45372",
    "signature": "0x4f550d2d5f19c1b0ad88d3f229d2c9b4ea0a879868ab6f316baa9813f6d86e5552d3bd9bc673634a3d3f9fff43b196eb2de6148009cf18d1327205cfb21a77c71b",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}