{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0x2e688d877e3e0aeec1c4d190b146e38f632506f49b60beb56e104295392bbade",
    "signature": "0x75f750b513354842e3f2fde996836ae2ab93c34378d039bb0b9dc0330cdd442715c33be91692aeb0cd414070757a71a6d9f4aebcef05cddb4f2146c670339fc21b",
    "signer": "0xD734eD686DDfe4915b10db6aadC4EaF015A7F594",
    "userId": "432395000"
  }
}