{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "505572751",
    "entityType": "User",
    "nonce": "0x78dcb8e3b837314d5b6e55e14d061df445ed582b1a39f6734dedd2e6d993702b",
    "signature": "0x2dce6471fe117b7d181deac69aaca8372eb3dfed1507aad1e1e30a881156d522503dfb4962f89af752eea7bbe62ff4e44ab83f832a91ddae403d757aae94ed581c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}