{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd603fe4574d2173c909b9b6acd9de26e42685cb00f8be463aa6dfb19ccfec0e6",
    "signature": "0x56351f8f740682b5499a1f84e0fe5063a50aa9598563e5283af015865b37967c6be0c0e8828f82ab8ec86cb2afaa99e53f230b85aac77ca764bf0096c741ac0a1b",
    "signer": "0x7057B81720E7a6f6915A2994E8B03e6d926eC1b0",
    "userId": "283361228"
  }
}