{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb06d047db6ea26d9a483e7af910cb781726ff69f90e0081dd221b57f4bab47d",
    "signature": "0xbc5ac10a14ce9f22ceeb095ac96814c46bd2265ebc3a7162715ba6600ced24c74238498b9be036e63cf5da0b5f88e6a3bb7c52a0dfcb8e57586683e7ff077ea21b",
    "signer": "0x09Ed944A6653804DF5E864d5240c837F643E2c0F",
    "userId": "214509563"
  }
}