{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x94bafe84843f61469d0fd475a17fc86df4fc22e52c50634d0c52c78f1f898d6b",
    "signature": "0x489aea30f74226a20c0d295df1a53691182eabdd004d8a28b1d942ed3fa4ff4256b3f4bd8190e73d72f160a03e239ae0866c7906cf092c27b9610c7f2b379aae1b",
    "signer": "0x90B2514a5947bA1E036212c91d845598F835eaAD",
    "userId": "910062147"
  }
}