{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12730129",
    "entityType": "User",
    "nonce": "0x5a014ff051758dc97e03463cb460f87e60ae0f2f68f55e3efbb796a41dd86dfd",
    "signature": "0xfcc5b02e54d16eedd7c8f37d91e7426655cc5863f49a7756a18df87823240af334b7cf93fec4b086918962a3f78897ed100c31c876f7db677e93b199aa7bdd9b1c",
    "signer": "0x720537125Aa4b451266209E0d508D7576a4bAF94",
    "userId": "942771296"
  }
}