{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "783177",
    "entityType": "User",
    "nonce": "0x9000020f4c3a525896b9a92e5ecebab57287e206c7d354515223a8c99ee19071",
    "signature": "0x0f2dfa236b21328c274bf5b74f114632c10c9522d83d427fe7cd3165f7a6c141339a07a110f402b928662eb7874e81f642b13da06667307243820768a3648d2e1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}