{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90f24c7aa7bbfe87ebbcd239dfdeae3425f0456922ff3589073dcd1400dcc0d1",
    "signature": "0x8cb0bd3aab5ec4f174df43bc7ec82e2c8b3134eb8370a82657d6442b545fcc4b7df8292e5d572b1a835caaf6979294e763f4832ad3dd9e760121e586ca5f31091c",
    "signer": "0xe80A18fB416e4e56C7EC1273c74DC3003BeEb971",
    "userId": "866632650"
  }
}