{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872",
    "entityType": "User",
    "nonce": "0xb56eebfb43aa832b883226c528b2950e222771a00d2b8262d234302eab4a31c2",
    "signature": "0xf0dd01fe0b6383bc1891747619b34de473cf03d05f56a78c03e60bf0959043e30e4cab46b6866529bf515b737a98b3a95502738acd38343f9f52bf85c838f8741c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}