{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeca516a6a30250e369abb36c7a5038344c24ec92b5bee72b0b364b6f5c70333d",
    "signature": "0x34cf9b2f38ccfea2917acb88857c85428f7f25d0df6d9370c81410c47bf95afa2c6223a3b8d1e3880298123860351794c8f0475aeeed2d5eccb189dc084f8a461c",
    "signer": "0xb3915075D765e7921f232D6EF6C0Cd186Fb141a2",
    "userId": "250948390"
  }
}