{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101990",
    "entityType": "User",
    "nonce": "0x8cd72870e6fe58e003501f21eeb9d4facf2215fb20fe911cc6fbe79ff9a0fd8e",
    "signature": "0xc9a5339d8c6c5e0ec306ea84f980c5f8e1a9a9e83389a39ce9f161813973b4b51f3241cb943253068e0859b715e2050d4fe6128413029f68162ad1f318aa4eb71b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}