{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x352552f95daef109338adf87c6c9207c482b82a7144f6d6f92763340ff0850d8",
    "signature": "0xca3dbdd0a53abf86f285455c52a86f8fbec0ef6ac4260e8fec56af4eb51d9f410e22508a084b2306e88ba72ff0bc6018707bc055cdb6fe18a98bab856032a3401b",
    "signer": "0xdcFe6Cf855Ad2418a373cd330AF57DE96dAE3C21",
    "userId": "213183480"
  }
}