{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342461",
    "entityType": "User",
    "nonce": "0x172a519f1fe35aed020a18aa18c2b827d829cade7f7ac55d5a7afa21776e4378",
    "signature": "0x434658e5f90620f6293e9a0cae601af75a750d3dc96e5a325f7b6de6cd91247c592385e12dfe4ee70e66a8138480f958857218ad4279c123c867aad08828a98b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}