{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xc25d70c5d14e250ee830a4ff7f68b7784c392a094654ae113b30b9becfe30172",
    "signature": "0x6d0147ca7dba655069d9396d4960e31eaf52292e140bdee37d92fab74a2ccc8a2a082664cb703b40b3a4c21b1f75c28f0399856dc92656b8cc41b62168f8a92f1b",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}