{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x9bfdf84a4f23d6a405af9e3b07e6e98513f883fb55aa59a6a11ae1d96a98eab9",
    "signature": "0x303a2c685afd91763e05ec93de85b972ef5f8d8d35c831093bee9dc46e2d25df20839685f2e8ce2818c0cc508b7fd687b323aff788184d67d158c76985c728e61c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}