{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a6b158980a0e46d345865d1d4a9ee59a6db4692ea33a506ada01f0cd56d661f",
    "signature": "0xb9f5fd91ed610def945765159dc1dfdaecd19b903881e5ef1986386e654107c830541cf7cee4070a2b26e688764923f5e39bb8fdc074a131f2f163de3f2efb6a1b",
    "signer": "0x8FC10d55fc21a28Bb280730c2478a62165b9f75e",
    "userId": "728580279"
  }
}