{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0x09ef2e5885e2467586e7bc78b1cdd41b40389ae421d10f830c3eb3408e0487a9",
    "signature": "0x097e9424e413ad80111078038814cea6ef3d5e0f1004ecc62c39bce443fa648e079586d4007d4922357ccc7a53cf2b8b4e68e2723011a174166554697256b2a91c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}