{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x01b429a11834e4ff3afc706894e2e804c6cc06541638d6952c46c2cf975d820f",
    "signature": "0x2ffcbeb6ac67132b8cfc4f4ddfc005701f414df48a05d26abdb683c46b61b8a474582e851f8d1c51f1af898baa9e07b4bec533ad608f684f0d1015f84429087c1b",
    "signer": "0x9b1a9d02F213F5C768F11FC832194b5cB665E056",
    "userId": "418702748"
  }
}