{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8915",
    "entityType": "User",
    "nonce": "0x951713c33bacbffe9a0e4df256906018d4b4ce302aeadd6ac41fb8d0d5cb7c18",
    "signature": "0x81abf45684cb7a869faf15b1542365f5d2ac2ec06e9b119e4345e71968689d0f7094d448871f98b7752c5bc115ab1d85363a4246b548461ac266d380a29f92ca1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}