{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5650ea598d7beb379107b982a6d92809f38844c4109e17831a8dbb361e1daed0",
    "signature": "0x36c4566a048fd6e8a40a2a8183289d30eb0771510c27313668a87d4c963a155070db50feb7e493e7acfc8270b8576d72b889fd37d6de42c34a38f2602a5f0b3d1b",
    "signer": "0x8bC21d16380cD5D8ad38F1BFEFF7AC3658aFaBA9",
    "userId": "817266055"
  }
}