{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfea0a22aa566d498e187109b3a45072b3f0678e946b9d9effc53fd0883b93d3f",
    "signature": "0x00377f67e6527e0a0e6b10c8a441a6fdd9a4771beba27bfad61c38794ddd46d44c043181306ee65e8f0959ebc1d54d03ba305c0db9e9f615d668331e948672091b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}