{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ff37edbf21a6e9308b936ca94663662bb9696a0634895ff2cfc76040aef0eac",
    "signature": "0x41ce5d17cf9c746697e02c00aff3b9dcf81663e1c563445f9c4f33cd8a6a3934529cb47c1d87d4b52d1a3932d9924f8c73bce353dee8b94e1f97526f3675df431c",
    "signer": "0x9810D28D5E91d46e23949F1B1B335b94051DF394",
    "userId": "577784012"
  }
}