{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273387437",
    "entityType": "User",
    "nonce": "0x48651f38c1515648ddf42a32dc91d59bce4dee33d7afc853857390e98047dd23",
    "signature": "0xabd465dab3e5f14be6148cbc293262f1981f10dba91a9b91c37661071c1a45e545ce8952cfe0b8967d19736bebbac71ce0bd85218327369ddc2b9b5b075bf3591c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}