{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437224383",
    "entityType": "User",
    "nonce": "0x538caa5e940e5d8cd509b10100ca86731975bc073b74faf54cca729862a47538",
    "signature": "0x1da730ec862545b475de2f96c97d54847fed09fda877cf455a033eafe3eee7497ee5e525a44d603bcf9b8240c90fa027613ae4fcd7119b25fe2817a1b6e5d2231b",
    "signer": "0xfeBBAF2B7d9F5bE3DAA34bEe70259f61ac4aB836",
    "userId": "139146722"
  }
}