{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0327ebbe4f642630f55ce72f963c663011ab382989b3314920ca351505c7d582",
    "signature": "0x8c9de1465ea53ebaed56b8cfe47a8ea7a7097b90badc97df7c9b462452fae1a800bd317676b2e5046c360d8e218edddb5c46b0950d5288653654697ba2d673341c",
    "signer": "0xFfc1448C89230bbA4D7974CF0ccdF9Da15F42c51",
    "userId": "451736675"
  }
}