{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x58d05a53f2d59e667db7c8f580da79e3c3fb57584bfb5e8c5f4161a6eba65d33",
    "signature": "0x14a667486633d4c41edc1ef1e73a75a75524008e3d683cfe6cbe62adffc290382988045fa46d083aa8e75a59458c67ce173395e783f59214600323120d9cf5fd1c",
    "signer": "0x31486898e68E355292Bd5aa0261Caf9AfD79dA6c",
    "userId": "199526646"
  }
}